In a tweet posted a few days ago, David Vonderhaar has teased that Call of Duty: Black Ops 3 has gone gold.
872 40c 50m 100y 153/102/0 996600 #turntup
— David Vonderhaar (@DavidVonderhaar) September 23, 2015
If you put those numbers/letter coordination into Google, it leads to you a site called the HKUST Graphic Identity. The numbers/letter combination Vahn tweeted matches up perfectly with the GOLD identity.
When a video game goes gold, that means that the team has finished working on the base game, and the game is now being printed onto discs and sent off to first party (Sony and Microsoft) for approvals. With Black Ops 3 at the gold stage, that means Treyarch is hard at work on day one fixes and updates, and most likely will soon start work on DLCs for the title.